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Prenatal Alcohol Exposure Inhibits Transient Expression of Autophagy and Synaptic Proteins in Developing Brain.

INTRODUCTION: Neuronal apoptosis and consequent inhibition of autophagy, with loss of synaptic connections are central events in the genesis … P15 rats showed motor abnormalities during low Bag3 expression. EtOH exposure reduced expression of synaptophysin and synapsin. In most synaptic plasticity pathways, levels of mRNAs were reduced. Several immediate-early genes were upregulated, but SYNPO, which is involved late in synaptic plasticity was downregulated 78%. Genes involved in Long Term Potentiatio …

[Supratentorial papillary glioneuronal tumors: a clinicopathological and genetic analysis of six cases].

Objective: To investigate the clinicopathological and genetic characteristics of papillary glioneuronal tumor (PGNT) and to reclassify cases … y for GFAP, OLIG2, S-100, and SOX10. Cells in the interpapillary areas exhibited diffuse or partial synaptophysin positivity, with focal and diffuse positivity for NeuN and calretinin in four cases. The Ki-67 proliferation index was mostly<5% (only one case showed a focal increase to 8%). All cases were negative for IDH1-R132H, H3K27M, and BRAF V600E. Cases 3 t …

CT1812 Attenuates Surgery-Induced Cognitive Impairment and Modulates TMEM97- and PGRMC1-Associated Hippocampal Stress Responses in Aged Mice.

Postoperative neurocognitive disorders (PND) are common complications in older surgical patients, but druggable mechanisms linking surgical … and MWM performance, and restored the synaptic markers postsynaptic density protein 95 (PSD95) and synaptophysin. CT1812 also normalized lipid-handling proteins, including apolipoprotein E (ApoE), ATP-binding cassette transporter A1 (ABCA1), cholesterol 24-hydroxylase (CYP46A1), and low-density lipoprotein receptor (LDLR), and reduced perilipin 2 (PLIN2) accum …

Exercise-induced Activation of SIRT1/BDNF/mTORC1 Signaling Pathway: A Novel Mechanism to Reduce Neuroinflammation and Improve Post-stroke Depression.

BACKGROUND: Neuroinflammation and neurogenic disorders lead to depression in stroke patients. As, exercise intervention, a non-drug therapy, … anges in PSD mice. Additionally, exercise enhanced the expression levels of SIRT1, BDNF (p < 0.01), synaptophysin (Syn1), and postsynaptic density (PSD) 95 (p < 0.01), thereby improving synaptic plasticity and enhancing astrocyte activity (p < 0.05). Furthermore, compared to the model+exercise+con-shRNA group, SIRT1 knockdown inhibited protein expression in the …

Activated Microglia Mediate the Motor Neuron-, Synaptic Denervation- and Muscle Wasting-Changes in Burn Injured Mice.

BACKGROUND: Muscle wasting (MW) of burn injury (BI) remains unresolved. Microglia-mediated inflammatory cytokine/chemokine release, motor ne … taining were used to examine microglia (Iba1 staining), MNL (NeuN staining) and synapse morphology (synaptophysin for nerve and α-bungarotoxin for muscle α7AChR). Spinal cytokine/chemokine transcripts, inflammatory transducer-protein expression and tibialis, soleus and gastrocnemius muscle weights were measured. RESULTS: BI to Wild-type mice caused significant …

MLKL-USP7-UBA52 signaling is indispensable for autophagy in brain through maintaining ubiquitin homeostasis.

Individuals with genetic elimination of MLKL (mixed lineage kinase domain like pseudokinase) exhibit an increased susceptibility to neurodeg … ide; OPCs: oligodendrocyte precursor cells; PFA: paraformaldehyde; PsKD: pseudo-kinase domain; SYP: synaptophysin; UB: ubiquitin; UBA52: ubiquitin A-52 residue ribosomal protein fusion product 1; UCHL3: ubiquitin C-terminal hydrolase L3; ULK1: unc-51 like autophagy activating kinase 1; UMAP: uniform manifold approximation and projection; UPS: ubiquitin-proteaso …

Expanding the Spectrum of NUTM1 -Rearranged Sarcoma : A Clinicopathologic and Molecular Genetic Study of 8 Cases.

Apart from the lethal midline carcinoma (NUT carcinoma), NUTM1 translocation has also been reported in mesenchymal tumors, but is exceedingl … ), CD99 (3/8), NKX2.2 (2/8), cyclin D1 (2/8), desmin (2/8), BCOR (2/8), S100 (1/8), TLE1 (1/8), and synaptophysin (1/8). Seven of 8 tumors demonstrated NUTM1 rearrangement by fluorescence in situ hybridization analysis. RNA-sequencing analysis identified MXD4::NUTM1 (3/7), MXI1::NUTM1 (3/7), and MGA::NUTM1 (1/7) fusions, respectively. DNA-based methylation prof …

Palisading Adenocarcinoma: A Morphologically Unique Salivary Gland Tumor With a Neuroendocrine-like Appearance and a Predilection for the Sublingual Glands of Women.

Adenocarcinoma, not otherwise specified (NOS) is a heterogenous group of salivary gland tumors that likely contains distinct tumors that hav … ariably positive for pan-cytokeratin (AE1/AE3) (7 of 9) with patchy S100 (4 of 9), but negative for synaptophysin (0 of 9) and chromogranin (0 of 9), while the ducts were strongly positive for pan-cytokeratin (AE1/AE3) (9 of 9) and CK5/6 (7 of 7). Next-generation sequencing did not reveal any fusions or obvious driver mutations. All cases were resected surgical …

Extraenteric Malignant Gastrointestinal Neuroectodermal Tumor-A Clinicopathologic and Molecular Genetic Study of 11 Cases.

Malignant gastrointestinal neuroectodermal tumors (MGNETs), also known as "gastrointestinal clear cell sarcoma-like tumors", are very rare, … seudopapillary architecture). Immunohistochemical results were S100 protein (11/11), SOX10 (11/11), synaptophysin (3/10), CD56 (7/9), CD117 (3/9), DOG1 (0/4), ALK (4/8), chromogranin A (0/10), HMB-45 (0/11), Melan-A (0/11), tyrosinase (0/4), and MiTF (0/11). Next-generation sequencing results were EWSR1::ATF1 (7 cases), EWSR1::CREB1 (3 cases), and EWSR1::PBX1 ( …

Clinicopathological and molecular spectrum of ewing sarcomas/PNETs, including validation of EWSR1 rearrangement by conventional and array FISH technique in certain cases.

Over the years, a wide clinicopathological spectrum has been identified within Ewing family of tumors (EFTs). As these tumors are chemosensi … ely positive for CD99 (48/52) (92.3 %); FLI-1 (17/18) (94.4 %); variably for BCL2 (16/18) (88.8 %), synaptophysin (6/20) (35 %), S100-P (2/7) (28.5 %), CD56 (2/5) (40 %), NSE (2/5) (40 %), calponin (3/4) (75 %), EMA (5/24) (20.8 %) and CK (3/24) (12.5 %), the latter two mostly focally. Fifty five tumors were EWS-FLI1 positive, while a single tumor was EWS-ERG p …

Clear cell sarcoma of soft tissue: a clinicopathologic, immunohistochemical, and molecular analysis of 33 cases.

Clear cell sarcoma (CCS) of soft tissue is a rare sarcoma with morphologic similarities to malignant melanoma but a distinct genetic backgro … (32/33), microphthalmia transcription factor (26/32), Melan A (23/32), CD57 (25/33), bcl-2 (30/32), synaptophysin (14/32), CD56 (7/32), epithelial membrane antigen (12/33), cytokeratin (AE1/AE3) (1/32), CD34 (3/32), c-erbB-2 (10/32), c-kit (5/32), and c-met (5/32). alpha-Smooth muscle actin, desmin, and cytokeratin (CAM5.2) were negative. Reverse transcription- …

[The ectopic ACTH syndrome].

INTRODUCTION: Endogenous Cushing's syndrome is a clinical state resulting from prolonged, inappropriate exposure to excessive endogenous sec … Stromal tissue was scanty, and mitotic figures were infrequent. Tumor cells were immunoreactive for synaptophysin, neuron-specific enolase, and ACTH. The postoperative course was uneventful and the patient was discharged on glucocorticoid supplementation. Signs of Cushing's syndrome were in regression, and patient remained normotensive and normoglycaemic withou …

Таламическая атрофия в множестве склероза связана с разъединением трактов и изменённой микроглией.

Таламическая атрофия уже происходит на ранних стадиях множественного склероза (MS) и постепенно продолжается на протяжении всего заболевания. Обезвоживание является одной из главных патологических характеристик MS, и, тем не менее, таламическое демиэлирование не имеет хорошей корреляции с таламической атрофией. Сочетая посмертные магнитные резонансные изображения с иммуногистохимией талами 13 контрольных и 13 спонсоров MS, мы изучили основные патологические источники таламической атрофии и патологии. Сначала мы провели оценку объемов четырех таламических ядер (настоящих, боковых, средних и зад

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… To do so, we quantified the amount of Synaptophysin + structures in LAMP1 + lysosomes in IBA1 + microglia. … b Quantification of Synaptophysin + spots in IBA1 + microglia (pre-synapses engulfment) and in IBA1 + LAMP1 + microglial lysosomes (pre-synapses phagocytosis). c Representatives images of synaptophysin in the MDn. d Percentage of pre-synaptic volume in control and MS donors. …

Acupuncture improves depressive-like behaviors in CUMS rats by modulating lateral habenula synaptic plasticity via the BDNF/ERK/mTOR pathway.

Acupuncture has been found to alleviate depressive behaviors caused by chronic unpredictable mild stress (CUMS) in rats. This study explores how acupuncture improves depressive behaviors by modulating synaptic plasticity in the lateral habenula through stimulation of Fengfu and Shangxing acupoints. Male Sprague-Dawley rats were divided into six groups, with the control group excluded. Undergoing a 28-day CUMS protocol, the intervention groups included sham needle stimulation, daily stimulation at the Fengfu (GV16) and Shangxing (GV23) acupoints on alternate days, fluoxetine (2.1 mg/kg, 0.21 mg

Hermansky-Pudlak protein complexes, AP-3 and BLOC-1, differentially regulate presynaptic composition in the striatum and hippocampus.

Endosomal sorting mechanisms mediated by AP-3 and BLOC-1 are perturbed in Hermansky-Pudlak Syndrome, a human genetic condition characterized by albinism and prolonged bleeding (OMIM #203300). Additionally, mouse models defective in either one of these complexes possess defective synaptic vesicle biogenesis (Newell-Litwa et al., 2009). These synaptic vesicle phenotypes were presumed uniform throughout the brain. However, here we report that AP-3 and BLOC-1 differentially regulate the composition of presynaptic terminals in the striatum and dentate gyrus of the hippocampus. Quantitative immunoel

Conservation of the Notch1 signaling pathway in gastrointestinal carcinoid cells.

Gastrointestinal (GI) carcinoid cells secrete multiple neuroendocrine (NE) markers and hormones including 5-hydroxytryptamine and chromogranin A. We were interested in determining whether activation of the Notch1 signal transduction pathway in carcinoid cells could modulate production of NE markers and hormones. Human pancreatic carcinoid cells (BON cells) were stably transduced with an estrogen-inducible Notch1 construct, creating BON-NIER cells. In the present study, we found that Notch1 is not detectable in human GI carcinoid tumor cells. The induction of Notch1 in human BON carcinoid cells

GABA/glycine signaling during degeneration and regeneration of mouse hypoglossal nerves.

In the adult central nervous system (CNS), GABA and glycine (Gly) are predominant inhibitory neurotransmitters, negatively regulating glutamatergic transmission. In the immature CNS, on the other hand, they act as trophic factors, mediating morphogenesis. In the present study, to investigate their involvement in axonal regeneration, we morphologically examined changes in their signaling in mouse hypoglossal nuclei during degeneration and regeneration of hypoglossal nerves. We found that (1) expression and localization of presynaptic elements were not changed, (2) localization of gephyrin, whic

A new mouse model for the slow-channel congenital myasthenic syndrome induced by the AChR εL221F mutation.

We have generated a new mouse model for congenital myasthenic syndromes by inserting the missense mutation L221F into the ε subunit of the acetylcholine receptor by homologous recombination. This mutation has been identified in man to cause a mild form of slow-channel congenital myasthenic syndrome with variable penetrance. In our mouse model we observe as in human patients prolonged endplate currents. The summation of endplate potentials may account for a depolarization block at increasing stimulus frequencies, moderate reduced muscle strength and tetanic fade. Calcium and intracellular vesic

Functional recovery in rats with ischemic paraplegia after spinal grafting of human spinal stem cells.

Transient spinal cord ischemia in humans can lead to the development of permanent paraplegia with prominent spasticity and rigidity. Histopathological analyses of spinal cords in animals with ischemic spastic paraplegia show a selective loss of small inhibitory interneurons in previously ischemic segments but with a continuing presence of ventral alpha-motoneurons and descending cortico-spinal and rubro-spinal projections. The aim of the present study was to examine the effect of human spinal stem cells (hSSCs) implanted spinally in rats with fully developed ischemic paraplegia on the recovery

[Electroacupuncture improves learning and memory impairment and enhances hippocampal synaptic plasticity through BDNF/TRKB/CREB signaling pathway in cerebral ischemia-reperfusion injury rats].

OBJECTIVE: To observe the effect of electroacupuncture on brain-derived neurotrophin factor (BDNF) / tyrosine kinase receptor B (TRKB) / cyc … Immunofluorescence staining was used to observe the positive expression levels of BDNF, PSD-95 and synaptophysin (SYN) in hippocampal CA1 region. The protein expression levels of BDNF, TRKB, CREB, PSD-95, and SYN in hippocampal tissue were detected by Western blot. RESULTS: Compared with the sham operation group, the neurological function score and escape lat …